Question: "Which is {namesake} of {Lagrange multiplier}, that has {studies} is {mathematical analysis} ?"
Paraphrase: "Which is {namesake} of {Lagrange multiplier}, that has {thinks about} is {numerical investigation} ?"
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q598870 wdt:P138 ?answer . ?answer wdt:P101 wd:Q7754}
Answer: Joseph-Louis Lagrange